import pandas as pd
list = [[110,120,105],[95,110,108],[98,80,100],[112,106,97]]
index = ['王蒙','李珊','赵胜','刘文']
columns = ['语文','数学','英语']
df = pd.DataFrame(list, index, columns)
print('原始数据: \n', df)
print('选取王蒙的所有成绩: \n', df.loc['王蒙'])
print('选取王蒙和刘文的所有成绩: \n', df.loc[['王蒙','刘文']])
print('选取王蒙到赵胜的所有成绩: \n', df.loc['王蒙','赵胜'])
print('选取王蒙和赵胜的语文和数学成绩: \n', df.loc[['王蒙','赵胜'],['语文','数学']])
print('选取王蒙到赵胜的语文和英语成绩: \n', df.loc['王蒙':'赵胜',['语文','英语']])